Finding the Third Proportional to 5,919.88 and 8,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,919.88 : 8,839.31 = 8,839.31 : x
2. Step 2: Convert to fraction form
   5,919.88/8,839.31 = 8,839.31/x
3. Step 3: Cross multiply
   5,919.88x = 8,839.31 × 8,839.31
4. Step 4: Simplify right side
   5,919.88x = 78,133,445.47
5. Step 5: Solve for x
   x = 78,133,445.47/5,919.88
6. Step 6: Final answer
   x = 13,198.50